of the three numbers, the first is twice the second,and the second is twice the third.the average of the reciprocal of the numbers is 7/12.the numbers are
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may we can arrange it as .. 4x,2x,x. where x is third no.
so (1/4x+1/x)/2 =5/4x/2= 5/8x
now it is given that
(1/4x+1/x)/2 = 7/12
hence, 5/8x =7/12
60=56x
x = 60/56= 10/9
4x= 40/9
2x= 20/9
may we can arrange it as .. 4x,2x,x. where x is third no.
so (1/4x+1/x)/2 =5/4x/2= 5/8x
now it is given that
(1/4x+1/x)/2 = 7/12
hence, 5/8x =7/12
60=56x
x = 60/56= 10/9
4x= 40/9
2x= 20/9
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